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Solar power, mummified cake, new species of dinosaur: what was important in science this week

2021-11-20T09:09:40.810Z


Is solar compulsory coming soon? The exploratory paper of the traffic light negotiators calls for "all suitable roof areas" to be used for solar energy in the future. How much does that really bring?


But that's not the only reason why the German solar industry is currently experiencing a new boom after its collapse a good ten years ago.

Technological progress, automated manufacturing processes and short delivery routes make production in Europe competitive again.

The big advantage in the past: solar power is now unrivaled in terms of price.

For his story about the new solar boom in Germany, my colleague Philip Bethge visited a family in Hamburg who had re-covered the roof of their semi-detached house from 1929 with solar tiles.

Plastic film as a solar cell

At the Fraunhofer Institute for Solar Energy Systems (ISE) in Freiburg, he was explained how solar cells made of different semiconductor materials can be stacked on top of one another, with each individual layer being able to use a different part of the solar spectrum.

In this way, the researchers can convert up to 46 percent of the energy in sunlight into electricity in the laboratory - twice as much as with conventional solar modules.

In Dresden, Philip visited the company Heliatek, which produces a bluish shimmering plastic film: a solar cell, less than two millimeters thick, self-adhesive, light, rollable, flexible.

Around 54 gigawatts of solar power are currently installed in Germany.

This means that solar systems cover around nine percent of the electricity requirement.

Experts estimate that it should be 300 to 450 gigawatts by 2040, an increase of around 20 gigawatts per year.

Philip paints a picture of a future in which every facade, every car roof, parking lot, noise barrier, and even rail tracks produce energy.

It's a sunny future - and a really exciting text!

Heartfelt

Your Veronika Hackenbroch

I also recommend you:

Backwerk is said to have survived the air raid in 1942:

worldwide reports were made about the "cake mummy" from Lübeck - a sensational find in recent archeology.

But now there are stories about the mysterious object that are probably not true.

Corona in winter:

The incidence is climbing relentlessly.

Modeler Dirk Brockmann outlines how things could continue and explains whether we need a shutdown.

He sees a catastrophe rolling towards society.

Spectacular skeleton:

Berthasaura leopoldinae, or »Bertha« for short, was named after a feminist and belongs to the T-Rex family.

However, the dinosaur fossil has no teeth.

Experts puzzle.

Origin of the pandemic:

A saleswoman from the animal market in Wuhan was the first corona patient, according to a study.

The new evidence suggests that the pandemic actually began there.

Air pollution from space boom:

The number of flights into

space

will increase massively - also because of fun trips by billionaires.

This is bad news for the environment.

And greenhouse gas emissions are not even the most pressing problem.

Picture of the week

Like black snow

, volcanic ash piles up in macabre beauty in front of a house on the Canary Island of La Palma.

The eruption on the Cumbre Vieja ridge has been going on for two months;

the volcano often throws the ash particles up several thousand meters before the larger particles sink back to the earth.

Due to its nature, the ashes in photographs sometimes appear as if they had been painted.

(Feedback & suggestions?)

Source: spiegel

All tech articles on 2021-11-20

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